BRUNSWICK — The aunt of convicted baby murderer De’Marquise Elkins had the remaining four years, nine months of her probation revoked Thursday after a judge heard evidence she had committed identify fraud, failed to pay restitution and had driven with a suspended license.

De’Marquise Elkins is serving 105 years in the March 25, 2013, shooting death of 13-month-old Antonio Santiago during an attempted armed robbery of his mother, Sherry West, as she pushed her son in his stroller.

His aunt, Katrina Elkins, had told police he had been at her house at the time Antonio was shot in the face in his stroller. She claimed that she had cooked breakfast for him there and that he had spent the morning playing video games on her computer.

But when police executed a search warrant at her home on P Street in Brunswick, they found something else lying in plain view beside her computer, Glynn County police investigator Gerald Herndon testified.

With the same stack of documents was a document advising Katrina Elkins about her food stamp benefits, Herndon testified.

Assistant District Attorney Liberty Stewart questioned each of the men whose names appeared on the credit card documents: Georgia state prison inmates Brandon Thomas Mann, Jamel Davis and Michael Jerome White.

Of the three, only White said he knew Elkins, and all three said they never gave anyone permission to use their birth dates and Social Security numbers to obtain credit cards or to file tax documents.

“I know her family,’’ White said, “her uncle and auntie. We went to school together.’’

White, who lived in Brunswick in 1990, said he had sent some paperwork to his sister, who once lived with Elkins, that had his and Davis’ identifying information. White testified he did so to enable his sister to get a lawyer’s help with a pending court case in a prison incident that Davis had witnessed.

Testifying in her own behalf, Elkins said she didn’t have a lawyer when she pleaded guilty to obstructing an officer and making a false statement, the two charges that landed her in prison and later on probation.

She also testified that she had not used her computer to obtain any credit cards and that a lot of other people had used it.

When District Attorney Jackie Johnson cross-examined Elkins about others using her computer, Elkins said, “I’m not trying to blame it on nobody. I don’t know who did it.”

She also stuck with the statements she made to police last March, that De’Marquise Elkins had been at her house the morning Antonio was killed.

“I didn’t lie. He was there at my house. He was there that morning,’’ she said.

She said later, “I don’t know what he did before he got there.’’

She answered that question over the objections of her lawyer, Stephen Tillman.

Scarlett found that the preponderance of the evidence, which is all that is required under Georgia law, showed that Elkins had violated the terms of her probation and that she had committed the felony offense of identity theft.

He also said it was her intent to fraudulently use the documents that police found.

Scarlett’s order does not change much for Elkins. She has not left jail — at least not for any extended period — since shortly after Antonio’s death. Officials in Henry County jailed her there for months last year because she had failed to pay fees associated with the driving charge. Then she was moved back to the Glynn County jail after her indictment on identity fraud charges.